If a sum of money becomes 4000 in 2 years 5500 in 4 years 6 months at the same rate of simple interest per annum. The the rate of simple interest is(य

Question

If a sum of money becomes 4000 in 2 years 5500 in 4 years 6 months at the same rate of simple interest per annum. The the rate of simple interest is(य

If a sum of money becomes 4000 in 2 years 5500 in 4 years 6 months at the same rate of simple interest per annum. The the rate of simple interest is(यदि कोई राशि साधारण बियाज को एक ही (वार्षिक) दर पर 2 वर्ष में रु 4000 और 4 वर्ष 6 माह में रु 5500 हो जाती है तो साधरण बियाज की दर ज्ञात करे?)
A. `21(3)/(7)%`
B. `21(2)/(7)%`
C. `21(1)/(7)%`
D. `21(5)/(7)%`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

(a) SI of 2.5 year =5500-4000=1500
`SI of 2 "year"=(1500)/(2.5)xx2=1200`
So, Principal=4000-2yearSI =4000-1200=2800`
`r%=(1200)/(2800xx2)xx100=21(3)/(7)`

4 views Answered 2023-02-05 15:29